Definition from Wiktionary, the free dictionary
undoubled (not comparable)
- Not doubled.
2009 May 2, Phillip Alder, “From the Long Island Regional, Twofold Success in No-Trump”, New York Times:
- Assuming at the other table that three no-trump was undoubled, if the contract was making, the redouble would increase the gain to 9 international match points from 4.